Search Engine - Revision history

User at 02:01, 20 January 2023

2023-01-20T02:01:28Z

User at 21:38, 3 January 2023

2023-01-03T21:38:59Z

User at 21:37, 3 January 2023

2023-01-03T21:37:55Z

User at 14:17, 22 December 2022

2022-12-22T14:17:22Z

User at 14:15, 22 December 2022

2022-12-22T14:15:58Z

User: The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

2021-02-06T18:12:39Z

The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

User: /* See Also */

2019-01-31T16:15:40Z

User at 12:59, 29 January 2019

2019-01-29T12:59:08Z

User at 02:21, 29 January 2019

2019-01-29T02:21:54Z

User: Created page with "'''Content Coming Soon'''"

2019-01-07T03:00:35Z

Created page with "'''Content Coming Soon'''"

New page

'''Content Coming Soon'''

@@ Line 51: / Line 51: @@
 ===See Also===
-[[Search Engine Optimization (SEO)]]<br />
+*[[Search Engine Optimization (SEO)]]
-[[SERP_(Search_Engine_Results_Page)|SERP]]
+*[[SERP_(Search_Engine_Results_Page)|SERP]]

@@ Line 23: / Line 23: @@
 '''Common Search Engines'''<ref>[https://www.webopedia.com/TERM/S/search_engine.html Common Search Engines]</ref><br />
 In addition to Web search engines other common types of search engines include the following:
-*Local (or offline) Search Engine
+*Local (or offline) Search Engine: Designed to be used for offline PC, CDROM or LAN searching usage.
-Designed to be used for offline PC, CDROM or LAN searching usage.
+*Metasearch Engine: A search engine that queries other search engines and then combines the results that are received from all.
-*Metasearch Engine
+*Blog Search Engine: A search engine for the blogosphere. Blog search engines only index and provide search results from blogs

@@ Line 1: / Line 1: @@
-A search engine is a web-based tool that enables users to locate information on the World Wide Web. Popular examples of search engines are Google, Yahoo!, and MSN Search. Search engines utilize automated software applications (referred to as robots, bots, or spiders) that travel along the Web, following links from page to page, site to site. The information gathered by the spiders is used to create a searchable index of the Web.<ref>Defining Search Engine [https://designhammer.com/services/seo-guide/search-engines Design Hammer]</ref>
+A '''search engine''' is a web-based tool that enables users to locate information on the World Wide Web. Popular examples of search engines are Google, Yahoo!, and MSN Search. Search engines utilize automated software applications (referred to as robots, bots, or spiders) that travel along the Web, following links from page to page, site to site. The information gathered by the spiders is used to create a searchable index of the Web.<ref>[https://designhammer.com/services/seo-guide/search-engines Defining Search Engine]</ref>
-To simplify, think of a search engine as two components. First a spider/web crawler trolls the web for content that is added to the search engine's index. Then, when a user queries a search engine, relevant results are returned based on the search engine's algorithm. Early search engines were based largely on page content, but as websites learned to game the system, algorithms have become much more complex and search results returned can be based on literally hundreds of variables. There used to be a significant number of search engines with significant market share. Currently, Google and Microsoft's Bing control the vast majority of the market. (While Yahoo generates many queries, their back-end search technology is outsourced to Microsoft.)<ref>Explaining Search Engine [https://www.techopedia.com/definition/12708/search-engine-world-wide-web Techopedia]</ref>
+To simplify, think of a search engine as having two components. First, a spider/web crawler trolls the web for content that is added to the search engine's index. Then, when a user queries a search engine, relevant results are returned based on the search engine's algorithm. Early search engines were based largely on-page content, but as websites learned to game the system, algorithms have become much more complex and search results returned can be based on literally hundreds of variables. There used to be a significant number of search engines with significant market share. Currently, Google and Microsoft's Bing control the vast majority of the market. (While Yahoo generates many queries, their back-end search technology is outsourced to Microsoft.)<ref>[https://www.techopedia.com/definition/12708/search-engine-world-wide-web Explaining Search Engine]</ref>
-'''How a Search Engine Works'''<ref>How a Search Engine Works [https://www.computerhope.com/jargon/s/searengi.htm ComputerHope]</ref><br />
+'''How a Search Engine Works'''<ref>[https://www.computerhope.com/jargon/s/searengi.htm How a Search Engine Works]</ref><br />
 Because large search engines contain millions and sometimes billions of pages, many search engines not only just search the pages but also display the results depending on their importance. This importance is commonly determined by using various algorithms. As illustrated in the image below, the source of all search engine data is a spider or crawler, which automatically visits pages and indexes their contents.
 Once a page has been crawled, the data contained in the page is processed and indexed. Often, this can involve the steps below.
 *Strip out stop words.
-*Record the remaining words in the page and the frequency they occur.
+*Record the remaining words on the page and the frequency at which they occur.
 *Record links to other pages.
 *Record information about any images, audio, and embedded media on the page.
@@ Line 18: / Line 18: @@
 [[File:Search_Engine.gif|200px|How Search Engine Works]]<br />
-source: [https://www.computerhope.com/jargon/s/searengi.htm Computer Hope]
+source: Computer Hope
-'''Common Search Engines'''<ref>Common Search Engines [https://www.webopedia.com/TERM/S/search_engine.html Webopedia]</ref><br />
+'''Common Search Engines'''<ref>[https://www.webopedia.com/TERM/S/search_engine.html Common Search Engines]</ref><br />
 In addition to Web search engines other common types of search engines include the following:
 *Local (or offline) Search Engine
@@ Line 31: / Line 31: @@
-'''Types of Search Engines'''<ref>Types of Search Engines [http://www.clib.dauniv.ac.in/E-Lecture/Search%20Engine.pdf Bhupendra Ratha]</ref><br />
+'''Types of Search Engines'''<ref>[http://www.clib.dauniv.ac.in/E-Lecture/Search%20Engine.pdf Types of Search Engines]</ref><br />
 A search engine type is determined by how the information contained in its catalog or database is collected. There are three main types of search engine tools:
 *Search directories or indexes
 **The sites in the catalog or database of a search directory or index are compiled by humans; not an automated software program. The sites are submitted, then assigned to the appropriate category.
-**Some search directories or indexes do not consider content when adding pages to their catalog. Others collect, rate or rank materials. Some search directories include annotations that evaluate, review, or otherwise describe the content.
+**Some search directories or indexes do not consider content when adding pages to their catalog. Others collect, rate, or rank materials. Some search directories include annotations that evaluate, review or otherwise describe the content.
 **Yahoo and LookSmart are examples of search directories or indexes.
 *Hybrid search engines
 **Hybrid search engines will present both crawler-based results and human-powered listings. Usually, a hybrid search engine will favor one type of listings over another.
-**MSN Search is more likely to present humanpowered listings over its crawler-based results especially for more obscure queries.
+**MSN Search is more likely to present human-powered listings over its crawler-based results, especially for more obscure queries.
 *Meta search engines
 **A meta search engine is a tool that helps to locate information available via the WWW.
-**It provides a single interface that enables users to search many different search engines, indexes and databases.
+**It provides a single interface that enables users to search many different search engines, indexes, and databases.
 **Therefore Meta search engines are capable of searching several search engine databases at once.
-'''Search Engine Technology'''<ref>Search Engine Technology [https://en.wikipedia.org/wiki/Web_search_engine Wikipedia]</ref><br />
+'''Search Engine Technology'''<ref>[https://en.wikipedia.org/wiki/Web_search_engine Search Engine Technology]</ref><br />
-A search engine maintains the following processes in near real time:
+A search engine maintains the following processes in near real-time:
-*Web crawling:Web search engines get their information by web crawling from site to site. The "spider" checks for the standard filename robots.txt, addressed to it, before sending certain information back to be indexed depending on many factors, such as the titles, page content, JavaScript, Cascading Style Sheets (CSS), headings, as evidenced by the standard HTML markup of the informational content, or its metadata in HTML meta tags. "[N]o web crawler may actually crawl the entire reachable web. Due to infinite websites, spider traps, spam, and other exigencies of the real web, crawlers instead apply a crawl policy to determine when the crawling of a site should be deemed sufficient. Some sites are crawled exhaustively, while others are crawled only partially".
+*Web crawling: Web search engines get their information by web crawling from site to site. The "spider" checks for the standard filename robots.txt, addressed to it, before sending certain information back to be indexed depending on many factors, such as the titles, page content, JavaScript, Cascading Style Sheets (CSS), headings, as evidenced by the standard HTML markup of the informational content, or its metadata in HTML meta tags. "[N]o web crawler may actually crawl the entire reachable web. Due to infinite websites, spider traps, spam, and other exigencies of the real web, crawlers instead apply a crawl policy to determine when the crawling of a site should be deemed sufficient. Some sites are crawled exhaustively, while others are crawled only partially".
 *Indexing: Indexing means associating words and other definable tokens found on web pages to their domain names and HTML-based fields. The associations are made in a public database, made available for web search queries. A query from a user can be a single word. The index helps find information relating to the query as quickly as possible. Some of the techniques for indexing, and caching are trade secrets, whereas web crawling is a straightforward process of visiting all sites on a systematic basis.
-*Searching: Typically when a user enters a query into a search engine it is a few keywords. The index already has the names of the sites containing the keywords, and these are instantly obtained from the index. The real processing load is in generating the web pages that are the search results list: Every page in the entire list must be weighted according to information in the indexes. Then the top search result item requires the lookup, reconstruction, and markup of the snippets showing the context of the keywords matched. These are only part of the processing each search results web page requires, and further pages (next to the top) require more of this post processing.
+*Searching: Typically when a user enters a query into a search engine it is a few keywords. The index already has the names of the sites containing the keywords, and these are instantly obtained from the index. The real processing load is in generating the web pages that are the search results list: Every page in the entire list must be weighted according to information in the indexes. Then the top search result item requires the lookup, reconstruction, and markup of the snippets showing the context of the keywords matched. These are only part of the processing each search result on a web page requires, and further pages (next to the top) require more of this post-processing.
 ===See Also===
-[[Search_Engine_Optimization_(SEO)|Search Engine Optimization (SEO)]]<br />
+[[Search Engine Optimization (SEO)]]<br />
 [[SERP_(Search_Engine_Results_Page)|SERP]]
-[[Internet|Internet]]<br />
 ===References===
@@ Line 65: / Line 63: @@
 ===Further Reading===
-*14 Great Search Engines You Can Use Instead of Google [https://www.searchenginejournal.com/alternative-search-engines/271409/ SEJ]
+*[https://www.searchenginejournal.com/alternative-search-engines/271409/ 14 Great Search Engines You Can Use Instead of Google]
-*Search Engines: Information Retrieval in Practice [http://ciir.cs.umass.edu/downloads/SEIRiP.pdf W. Bruce Croft, Donald Metzler, Trevor Strohman]
+*[http://ciir.cs.umass.edu/downloads/SEIRiP.pdf Search Engines: Information Retrieval in Practice]

@@ Line 1: / Line 1: @@
-A search engine is a web-based tool that enables users to locate information on the World Wide Web. Popular examples of search engines are Google, Yahoo!, and MSN Search. Search engines utilize automated [[software]] applications (referred to as robots, bots, or spiders) that travel along the Web, following links from page to page, site to site. The information gathered by the spiders is used to create a searchable index of the Web.<ref>Defining Search Engine [https://designhammer.com/services/seo-guide/search-engines Design Hammer]</ref>
+A search engine is a web-based tool that enables users to locate information on the World Wide Web. Popular examples of search engines are Google, Yahoo!, and MSN Search. Search engines utilize automated software applications (referred to as robots, bots, or spiders) that travel along the Web, following links from page to page, site to site. The information gathered by the spiders is used to create a searchable index of the Web.<ref>Defining Search Engine [https://designhammer.com/services/seo-guide/search-engines Design Hammer]</ref>
-To simplify, think of a search engine as two components. First a spider/web crawler trolls the web for content that is added to the search engine's index. Then, when a user queries a search engine, relevant results are returned based on the search engine's [[algorithm]]. Early search engines were based largely on page content, but as websites learned to game the [[system]], algorithms have become much more complex and search results returned can be based on literally hundreds of variables. There used to be a significant number of search engines with significant [[market]] share. Currently, Google and Microsoft's Bing [[control]] the vast majority of the market. (While Yahoo generates many queries, their back-end search technology is outsourced to Microsoft.)<ref>Explaining Search Engine [https://www.techopedia.com/definition/12708/search-engine-world-wide-web Techopedia]</ref>
+To simplify, think of a search engine as two components. First a spider/web crawler trolls the web for content that is added to the search engine's index. Then, when a user queries a search engine, relevant results are returned based on the search engine's algorithm. Early search engines were based largely on page content, but as websites learned to game the system, algorithms have become much more complex and search results returned can be based on literally hundreds of variables. There used to be a significant number of search engines with significant market share. Currently, Google and Microsoft's Bing control the vast majority of the market. (While Yahoo generates many queries, their back-end search technology is outsourced to Microsoft.)<ref>Explaining Search Engine [https://www.techopedia.com/definition/12708/search-engine-world-wide-web Techopedia]</ref>
 '''How a Search Engine Works'''<ref>How a Search Engine Works [https://www.computerhope.com/jargon/s/searengi.htm ComputerHope]</ref><br />
-Because large search engines contain millions and sometimes billions of pages, many search engines not only just search the pages but also display the results depending on their importance. This importance is commonly determined by using various algorithms. As illustrated in the image below, the source of all search engine [[data]] is a spider or crawler, which automatically visits pages and indexes their contents.
+Because large search engines contain millions and sometimes billions of pages, many search engines not only just search the pages but also display the results depending on their importance. This importance is commonly determined by using various algorithms. As illustrated in the image below, the source of all search engine data is a spider or crawler, which automatically visits pages and indexes their contents.
 Once a page has been crawled, the data contained in the page is processed and indexed. Often, this can involve the steps below.
@@ Line 48: / Line 48: @@
 '''Search Engine Technology'''<ref>Search Engine Technology [https://en.wikipedia.org/wiki/Web_search_engine Wikipedia]</ref><br />
 A search engine maintains the following processes in near real time:
-*Web crawling:Web search engines get their information by web crawling from site to site. The "spider" checks for the [[standard]] filename robots.txt, addressed to it, before sending certain information back to be indexed depending on many factors, such as the titles, page content, [[JavaScript]], Cascading Style Sheets (CSS), headings, as evidenced by the standard HTML markup of the informational content, or its [[metadata]] in HTML meta tags. "[N]o web crawler may actually crawl the entire reachable web. Due to infinite websites, spider traps, [[spam]], and other exigencies of the real web, crawlers instead apply a crawl [[policy]] to determine when the crawling of a site should be deemed sufficient. Some sites are crawled exhaustively, while others are crawled only partially".
+*Web crawling:Web search engines get their information by web crawling from site to site. The "spider" checks for the standard filename robots.txt, addressed to it, before sending certain information back to be indexed depending on many factors, such as the titles, page content, JavaScript, Cascading Style Sheets (CSS), headings, as evidenced by the standard HTML markup of the informational content, or its metadata in HTML meta tags. "[N]o web crawler may actually crawl the entire reachable web. Due to infinite websites, spider traps, spam, and other exigencies of the real web, crawlers instead apply a crawl policy to determine when the crawling of a site should be deemed sufficient. Some sites are crawled exhaustively, while others are crawled only partially".
-*Indexing: Indexing means associating words and other definable tokens found on web pages to their domain names and HTML-based fields. The associations are made in a public database, made available for web search queries. A query from a user can be a single word. The index helps find information relating to the query as quickly as possible. Some of the techniques for indexing, and caching are trade secrets, whereas web crawling is a straightforward [[process]] of visiting all sites on a systematic basis.
+*Indexing: Indexing means associating words and other definable tokens found on web pages to their domain names and HTML-based fields. The associations are made in a public database, made available for web search queries. A query from a user can be a single word. The index helps find information relating to the query as quickly as possible. Some of the techniques for indexing, and caching are trade secrets, whereas web crawling is a straightforward process of visiting all sites on a systematic basis.
 *Searching: Typically when a user enters a query into a search engine it is a few keywords. The index already has the names of the sites containing the keywords, and these are instantly obtained from the index. The real processing load is in generating the web pages that are the search results list: Every page in the entire list must be weighted according to information in the indexes. Then the top search result item requires the lookup, reconstruction, and markup of the snippets showing the context of the keywords matched. These are only part of the processing each search results web page requires, and further pages (next to the top) require more of this post processing.

@@ Line 27: / Line 27: @@
 *Metasearch Engine
 A search engine that queries other search engines and then combines the results that are received from all.
-*[[Blog]] Search Engine
+*Blog Search Engine
 A search engine for the blogosphere. Blog search engines only index and provide search results from blogs

← Older revision		Revision as of 12:59, 29 January 2019
Line 51:		Line 51:
	*Indexing: Indexing means associating words and other definable tokens found on web pages to their domain names and HTML-based fields. The associations are made in a public database, made available for web search queries. A query from a user can be a single word. The index helps find information relating to the query as quickly as possible. Some of the techniques for indexing, and caching are trade secrets, whereas web crawling is a straightforward process of visiting all sites on a systematic basis.		*Indexing: Indexing means associating words and other definable tokens found on web pages to their domain names and HTML-based fields. The associations are made in a public database, made available for web search queries. A query from a user can be a single word. The index helps find information relating to the query as quickly as possible. Some of the techniques for indexing, and caching are trade secrets, whereas web crawling is a straightforward process of visiting all sites on a systematic basis.
	*Searching: Typically when a user enters a query into a search engine it is a few keywords. The index already has the names of the sites containing the keywords, and these are instantly obtained from the index. The real processing load is in generating the web pages that are the search results list: Every page in the entire list must be weighted according to information in the indexes. Then the top search result item requires the lookup, reconstruction, and markup of the snippets showing the context of the keywords matched. These are only part of the processing each search results web page requires, and further pages (next to the top) require more of this post processing.		*Searching: Typically when a user enters a query into a search engine it is a few keywords. The index already has the names of the sites containing the keywords, and these are instantly obtained from the index. The real processing load is in generating the web pages that are the search results list: Every page in the entire list must be weighted according to information in the indexes. Then the top search result item requires the lookup, reconstruction, and markup of the snippets showing the context of the keywords matched. These are only part of the processing each search results web page requires, and further pages (next to the top) require more of this post processing.
−
−
−	~~'''Search Engine Approaches'''<ref>Different Search Engine Approaches [https://whatis.techtarget.com/definition/search-engine Techtarget]</ref><br />~~
−	*Major search engines such as Google, Bing, and Yahoo index the content of a large portion of the Web and allow users to query their index to find relevant pages.
−	*Specialized content search engines may be more selective about what part of the Web is crawled and indexed.
−	*Country specific search engines may prioritize in-language websites over English websites.
−	*Individual Web sites, especially larger corporate sites, may use a search engine to index and retrieve the content of just their own site. Some of the major search engine companies license or sell their search engines for use on individual sites.

← Older revision		Revision as of 02:21, 29 January 2019
Line 1:		Line 1:
−	'''~~Content Coming Soon~~'''	+	A search engine is a web-based tool that enables users to locate information on the World Wide Web. Popular examples of search engines are Google, Yahoo!, and MSN Search. Search engines utilize automated software applications (referred to as robots, bots, or spiders) that travel along the Web, following links from page to page, site to site. The information gathered by the spiders is used to create a searchable index of the Web.<ref>Defining Search Engine [https://designhammer.com/services/seo-guide/search-engines Design Hammer]</ref>
		+
		+	To simplify, think of a search engine as two components. First a spider/web crawler trolls the web for content that is added to the search engine's index. Then, when a user queries a search engine, relevant results are returned based on the search engine's algorithm. Early search engines were based largely on page content, but as websites learned to game the system, algorithms have become much more complex and search results returned can be based on literally hundreds of variables. There used to be a significant number of search engines with significant market share. Currently, Google and Microsoft's Bing control the vast majority of the market. (While Yahoo generates many queries, their back-end search technology is outsourced to Microsoft.)<ref>Explaining Search Engine [https://www.techopedia.com/definition/12708/search-engine-world-wide-web Techopedia]</ref>
		+
		+
		+	'''How a Search Engine Works'''<ref>How a Search Engine Works [https://www.computerhope.com/jargon/s/searengi.htm ComputerHope]</ref><br />
		+	Because large search engines contain millions and sometimes billions of pages, many search engines not only just search the pages but also display the results depending on their importance. This importance is commonly determined by using various algorithms. As illustrated in the image below, the source of all search engine data is a spider or crawler, which automatically visits pages and indexes their contents.
		+
		+	Once a page has been crawled, the data contained in the page is processed and indexed. Often, this can involve the steps below.
		+	*Strip out stop words.
		+	*Record the remaining words in the page and the frequency they occur.
		+	*Record links to other pages.
		+	*Record information about any images, audio, and embedded media on the page.
		+
		+	The data collected above is used to rank the page and is the primary method a search engine uses to determine if a page should be shown and in what order.
		+	Finally, once the data is processed, it is broken up into one or more files, moved to different computers, or loaded into memory where it can be accessed when a search is performed.
		+
		+
		+	[[File:Search_Engine.gif\|200px\|How Search Engine Works]]<br />
		+	source: [https://www.computerhope.com/jargon/s/searengi.htm Computer Hope]
		+
		+
		+	'''Common Search Engines'''<ref>Common Search Engines [https://www.webopedia.com/TERM/S/search_engine.html Webopedia]</ref><br />
		+	In addition to Web search engines other common types of search engines include the following:
		+	*Local (or offline) Search Engine
		+	Designed to be used for offline PC, CDROM or LAN searching usage.
		+	*Metasearch Engine
		+	A search engine that queries other search engines and then combines the results that are received from all.
		+	*Blog Search Engine
		+	A search engine for the blogosphere. Blog search engines only index and provide search results from blogs
		+
		+
		+	'''Types of Search Engines'''<ref>Types of Search Engines [http://www.clib.dauniv.ac.in/E-Lecture/Search%20Engine.pdf Bhupendra Ratha]</ref><br />
		+	A search engine type is determined by how the information contained in its catalog or database is collected. There are three main types of search engine tools:
		+	*Search directories or indexes
		+	**The sites in the catalog or database of a search directory or index are compiled by humans; not an automated software program. The sites are submitted, then assigned to the appropriate category.
		+	**Some search directories or indexes do not consider content when adding pages to their catalog. Others collect, rate or rank materials. Some search directories include annotations that evaluate, review, or otherwise describe the content.
		+	**Yahoo and LookSmart are examples of search directories or indexes.
		+	*Hybrid search engines
		+	**Hybrid search engines will present both crawler-based results and human-powered listings. Usually, a hybrid search engine will favor one type of listings over another.
		+	**MSN Search is more likely to present humanpowered listings over its crawler-based results especially for more obscure queries.
		+	*Meta search engines
		+	**A meta search engine is a tool that helps to locate information available via the WWW.
		+	**It provides a single interface that enables users to search many different search engines, indexes and databases.
		+	**Therefore Meta search engines are capable of searching several search engine databases at once.
		+
		+
		+	'''Search Engine Technology'''<ref>Search Engine Technology [https://en.wikipedia.org/wiki/Web_search_engine Wikipedia]</ref><br />
		+	A search engine maintains the following processes in near real time:
		+	*Web crawling:Web search engines get their information by web crawling from site to site. The "spider" checks for the standard filename robots.txt, addressed to it, before sending certain information back to be indexed depending on many factors, such as the titles, page content, JavaScript, Cascading Style Sheets (CSS), headings, as evidenced by the standard HTML markup of the informational content, or its metadata in HTML meta tags. "[N]o web crawler may actually crawl the entire reachable web. Due to infinite websites, spider traps, spam, and other exigencies of the real web, crawlers instead apply a crawl policy to determine when the crawling of a site should be deemed sufficient. Some sites are crawled exhaustively, while others are crawled only partially".
		+	*Indexing: Indexing means associating words and other definable tokens found on web pages to their domain names and HTML-based fields. The associations are made in a public database, made available for web search queries. A query from a user can be a single word. The index helps find information relating to the query as quickly as possible. Some of the techniques for indexing, and caching are trade secrets, whereas web crawling is a straightforward process of visiting all sites on a systematic basis.
		+	*Searching: Typically when a user enters a query into a search engine it is a few keywords. The index already has the names of the sites containing the keywords, and these are instantly obtained from the index. The real processing load is in generating the web pages that are the search results list: Every page in the entire list must be weighted according to information in the indexes. Then the top search result item requires the lookup, reconstruction, and markup of the snippets showing the context of the keywords matched. These are only part of the processing each search results web page requires, and further pages (next to the top) require more of this post processing.
		+
		+
		+	'''Search Engine Approaches'''<ref>Different Search Engine Approaches [https://whatis.techtarget.com/definition/search-engine Techtarget]</ref><br />
		+	*Major search engines such as Google, Bing, and Yahoo index the content of a large portion of the Web and allow users to query their index to find relevant pages.
		+	*Specialized content search engines may be more selective about what part of the Web is crawled and indexed.
		+	*Country specific search engines may prioritize in-language websites over English websites.
		+	*Individual Web sites, especially larger corporate sites, may use a search engine to index and retrieve the content of just their own site. Some of the major search engine companies license or sell their search engines for use on individual sites.
		+
		+
		+	===See Also===
		+	[[Search_Engine_Optimization_(SEO)\|Search Engine Optimization (SEO)]]<br />
		+	[[Internet\|Internet]]<br />
		+	[[World_Wide_Web_(WWW)\|World Wide Web]]<br />
		+	[[Dark_Web\|Dark Web]]
		+
		+
		+	===References===
		+	<references/>
		+
		+
		+	===Further Reading===
		+	*14 Great Search Engines You Can Use Instead of Google [https://www.searchenginejournal.com/alternative-search-engines/271409/ SEJ]
		+	*Search Engines: Information Retrieval in Practice [http://ciir.cs.umass.edu/downloads/SEIRiP.pdf W. Bruce Croft, Donald Metzler, Trevor Strohman]